Souvenir Pages are issued by the United States Postal Service, (USPS) and are available only through subscriptions from the USPS or from dealers. Each page supplies pertinent information about the issued stamp; The First Day City, Colors, Image Area, Designer, etc, and a brief narrative about the honoree.  

If you're interested in collecting Souvenir Pages or other items available only from the USPS, you can obtain a catalog, (USA Philatelic) of all the items that the Postal Service has available by calling (800) 782-6724.

Two Souvenir Pages from the Black Heritage Series are illustrated below; 1990 - Ida B. Wells and 1979 - Martin Luther King, Jr.